baber/WOPTO huggingface dataset:
Patent GB-379037-A (GB)
Title: Improvements in or relating to thermostats
IPC: G05D23/12
Filed: 1931-06-26
Abstract: 379,037. Fire-alarms. DERBY, J. H. and AMERICAN FIRE PREVENTION BUREAU, 1, Madison Avenue, New York, U.S.A. June 26, 1931, No. 18543. [Class 47 (i).] Thermostats, in which a fusible conductor melts and bridges terminal pieces inserted in alarm or other circuits, are provided with means for preventing contact being made as a result of cold flow. An insulating disc 17, Fig. 1, is clamped between a metallic button 18 and a fusible metal disc 16, by circular terminal plates 10, 11 separated by insulating rings 12, 13. The members 16, 17, 18 are surrounded by an annular insulator 15, whose vertical inner edge and small separation from the disc 17 prevent the metal 16 reaching the button, unless molten. Alternatively, the annular ring 15 may be dispensed with, and the insulating disc made rather wider than the button so as to prevent the cold metal reaching the latter. In a modification, the button is recessed underneath, and the disc 17 has a small central perforation and is flexible so as to yield to pressure resulting from cold flow. In Fig. 6, the annular ring 13 is extended inwards to take the place of the ring 15, Fig. 1, the insulating disc 17 meets the sides of a depression 14 in the metal case, and the fused metal flows through a hole 27 into a recess 26 to make contact with the button 18. In a further modification, the insulating disc 17, Fig. 4, is extended and clasped between the rings 12, 13 together with the upper metal cover, a depression in the centre of which takes the place of the metal button. Specification 123,058, [Class 38 (v), Electric switches &c.], is referred to.
Patent GB-562513-A (GB)
Title: Improvements in or relating to apparatus for controlling the frequency of oscillators
IPC: H04N5/12
Filed: 1942-12-31
Abstract: 562,513. Automatic control systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Dec. 31, 1942, No. 18570. Convention date, Dec. 31, 1941. [Class 38 (iv)] [Also in Group XL] A saw-tooth oscillator is controlled as to frequency or phase by combining the sawtooth wave with opposed phases of a synchronizing pulse, the resultant being rectified to provide a control voltage for regulating the oscillator. The system is particularly applicable for synchronizing the cathode-ray deflecting circuit in a television receiver. A relaxation oscillator comprises condensers 33, 34, charging resistance 36, and discharging valve 32, the latter being triggered by pulses supplied by a blocking oscillator 27. The saw-tooth voltage across the condensers 33, 34 is applied to the grid of an amplifier 37 which feeds saw-tooth current to the scanning coils 22 of a television reproducer 11. Incoming synchronizing signals are amplified at 10 and separated from the video signals and applied through transformer 43 to opposite ends CB of a resistance, the midpoint A of which receives the saw-tooth voltage from the condenser 34 of the relaxation oscillator. The resultant voltages at CB thus comprise a saw-tooth voltage with the synchronizing pulses superposed in opposite senses. These voltages are rectified in the opposed diodes 51, 53 and the mean of their rectified voltages is taken through resistances 58, 59 to the grid of a valve 61, the plate of which applies a control voltage in the grid circuit of the blocking- oscillator 27. Any change from the normal phase relation of the saw-tooth voltage and the pulses establishes a correcting voltage on the grid of the valve 61 and on the grid of the blocking oscillator, in such sense as to restore the phase relation to normal. A similar control circuit is employed for synchronizing the framefrequency current through the coils 23. Alternating components are removed from the output of the valve 61 by a condenser 63 and a resistance-condenser branch 64, 66. The outputs of the rectifiers 51, 53 may be combined by applying them to the grids of separate valves having a common resistance in their plate circuits, Fig. 2 (not shown). Specification 525,342 is referred to.
Patent GB-635725-A (GB)
Title: Improvements in and relating to tubular wire rope stranding machines
IPC: D07B3/04
Filed: 1947-07-14
Abstract: 635,725. Tubular wire-rope stranding machines. SOMERVILLE, W. E. July 14, 1947, No. 18633. Convention date, Aug. 1, 1945. [Class 109] In a tubular wire-rope stranding machine, the tube sections are connected together by universal joints or other flexible connections to prevent " whip " or vibration during rotation, such connectors being of small diameter compared with that of the tube so that room is provided for the unobstructed passage of the wires from the hollow trunnions to the periphery of the tube. The flexižle connectors are themselves attached to transverse " spiders " within the tube sections at a short distance from the ends thereof. Figs. 3 and 4 show the junction between two of the tube sections 2, 3, which carry bobbins 5 supported on cradles 6 in the usual manner and are themselves supported on external bearings not shown. The universal joint consists of a split ring 12 having four bearings for pairs of trunnions 11 arranged in the transverse plane of the gap separating the tube sections and carried respectively by brackets 9 supported by spiders 8 within the ends of the tube sections. The dimensions are such that the wire A has unobstructed passage from the hollow trunnion 7 to the periphery of the adjacent tube section. In the arrangement shown in Fig. 7, brackets 15 are similarly clamped to a stiff fibre plate or disc 17 to give the desired flexibility.
Patent GB-1393275-A (GB)
Title: Self-centering rotary magnetic suspension
IPC: F16C39/06
Filed: 1972-04-21
Abstract: 1393275 Magnetic bearings COMITATO NAZIONALE PER L'ENERGIA NUCLEARE 21 April 1972 [24 April 197 18702/72 Heading F2A A magnetic bearing arrangement for a rotating load 16 mounted on a shaft 10 driven by a device 17 comprises upper and lower magnetic support units A, C and an intermediate axial balancing unit B. Each support unit comprises a fixed magnetic member 1, 2, 3 having annular projections 5, 6 which face similar projections 8, 9 on a ferromagnetic member 4 attached to the shaft 10. The unit B comprises an electrically conductive disc 15, e.g. of copper or aluminium, attached to the shaft 10 and located between two stationary magnetic elements 14a, 14b each of which comprises a plurality of permanent magnets, each trapezoidal in plan (Fig. 2, not shown), arranged around the shaft 10 so that the faces of adjacent magnets have opposite polarity. In operation, the units A, C support and centre the shaft 10 with respect to a housing 19 whilst the unit 5 stabilizes the shaft 10 in the axial direction by virtue of the interaction between the magnetic fields of the elements 14a, 14b and the field produced by eddy currents in the disc 15. A thrust bearing 11, 12 supports the shaft 10 when the latter is stationary. In a modification, Fig. 4 (not shown), the unit B comprises a magnetic element (21) attached to the shaft 10 and located between two stationary electrically conductive discs (20a, 20b).
Patent GB-443360-A (GB)
Title: Improvements relating to brassieres
IPC: A41C3/00
Filed: 1934-06-25
Abstract: 443,360. Brassieres. HOLT, R., 39, Great Marlborough Street, London. June 25, 1934, No. 18703. [Class 141] A brassiere comprises a pair of breast pockets, from the outer extremity of each of which a back strap is adapted to pass upwardly under the wearer's arm into sliding engagement with a ring or loop on the rear end of a shoulder strap, connected at its front end to the top of a breast pocket, the back straps being adapted to be secured across the wearer's back. The breast pockets are each preferably square, arranged so that the diagonals pass vertically and horizontally over the nipples, and are shaped by means of a dart cut with convex edges. The edges 8, 9 and the edges 8<1> of the pockets are reinforced either by overturned seam edges, or by continuations of the shoulder and back straps respectively. The inner lower edges of the pockets may be provided with overlapping triangular extensions, and a straining tape 12 is provided along the lower edge of the garment, and serves to carry securing means for the free ends of the back straps. A member may be provided to prevent the straps from cutting into the wearer's back, detachably connected at its ends to the extremities 6<1> of the pockets, or made in two parts detachably connected together in the middle of the back. In a modification, the back straps, after passing through the loops in the shoulder straps, may be extended downwardly through a loop or loops on a waistband or corset, and then upwardly for attachment to the side of the brassiere.
Patent GB-314946-A (GB)
Title: Improvements in and relating to the control of high frequency generators
IPC: H03C5/00
Filed: 1929-06-18
Abstract: 314,946. Asch, E. July 5, 1928, [Convention date]. Addition to 300,511, [Class 40 (v), Wireless signalling &c.]. Non - contact - making relays. - A resistance coupled amplifier as described in the parent Specification is adapted to generate oscillations by back-coupling the output valve to the grid circuit of the preceding valve. The magnitude of the oscillations depends on the size of the condenser connected in parallel to the anode resistance w. Fig. 2 shows a condenser microphone relay operated by audio-frequency currents from transformer d applied to the plate y of the relay which is provided with a diaphragm r cooperating with a plate z. The capacity r, z is arranged in parallel to the anode resistance w to control the magnitude of the oscillations.
Patent GB-477203-A (GB)
Title: Improvements in coffee makers
IPC: A47J31/06
Filed: 1937-07-06
Abstract: 477,203. Coffee percolators. CORNING GLASS WORKS. July 6, 1937, No. 18738. Convention date, Aug. 17, 1936. [Class 129] A coffee maker comprises a brewing vessel and a valve and filter assembly enabling hot water to be held in the brewing vessel in contact with the coffee grounds as long as desired, and then filtered into a beverage receiver. The valve arrangement consists of a channelled seating plate for the perforated bottom of the brewing vessel so that the relative angular positions of these determine whether the beverage can pass into the receiver or be retained. The brewing vessel 12 has an annular series of perforations 14, and the seating plate 11 has a corresponding series of radial channels 15 which are registered with the holes 14 when it is desired to allow the beverage to pass into the receiver 10. At other times the holes 14 are blocked by the portions of the plate 11 between the channels. The two relative positions of the plate 11 are effected by rotation of the vessel 12 on which is marked an arrow 24 to be registered with either of the two indicia shown in Fig. 1. The plate 11 has an internal annular flange 18 forming a depression 17 to trap coffee grounds 26 which may pass through the holes 14. The coffee grounds in the bottom of the vessel 12 bed over the holes 14 and form a filter for the beverage.
Patent GB-1101411-A (GB)
Title: Vulcanizable compositions
Inventor: BLANCHARD ALLAN FREDERICK
IPC: C08L19/00
Filed: 1964-05-06
Abstract: Vulcanized elastomers are prepared by heating a composition comprising a synthetic rubbery polymer having groups which under the vulcanization conditions employed are hydrolysable to carboxylic acid groups, an organic peroxide, and an oxide or hydroxide of an alkaline earth metal or lead monoxide.  Other vulcanizing agents such as sulphur may be employed in addition to the peroxide, e.g. dicumyl peroxide.  The rubbery polymer may be a copolymer of an unsaturated hydrocarbon, e.g. ethylene, propylene, styrene or butadiene, with an alkyl, cyanoalkyl or aralkyl ester of an unsaturated carboxylic acid, e.g. acrylic, methacrylic, sorbic or itaconic acid; maleates or fumarates may be used in minor amounts in styrene copolymers. Acrylonitrile may additionally be included in the rubbery polymer. Suitable alkaline earth metal (hydr)oxides include MgO, CaO, SrO, Ca(OH)2, Sr(OH)2 and Ba(OH)2.  Optional ingredients which may be present include fatty acids, e.g. stearic acid, antioxidants, e.g. isopropylamino - diphenylamine and 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, fillers, e.g. carbon black or metal oxide or hydroxide, extenders, e.g. mineral oils with a high paraffinic, naphthenic or aromatic content, process oil and other polymers. Examples illustrate the vulcanization of butadiene -styrene - methyl acrylate, butadiene-methyl methacrylate and butadiene-styrenemethyl methacrylate copolymers.
Patent GB-134799-A (GB)
Title: Safety Control Devices for Centrifugal Driers.
Inventor: GOOLD LEWIS WILLIAM
IPC: B04B7/06
Filed: 1918-11-27
Abstract: 134,799. Goold, L. W., (American Laundry Machinery Co.). Nov. 27, 1918. Density separators; casings; driving. - The basket or drum of a hydro-extractor is arranged so that part thereof may be moved vertically, and means are arranged so that raising or lowering can only be effected when the rotating means is inoperative. For this purpose, the belt A which drives the machine is arranged to rotate either the pulley 14 and the pulley 30 which carries the belt 31 driving the elevating gear, or the pulleys 13 and 11 which by means of the pulley 8 rotate the basket. The elevating gear is put in operation by a clutch 31 controlled by a handle 67, which, together with the belt-shifting fork handle 55, is interconnected with the brake 70, a hinged lid 47 on the top of the casing, and with a hinged table 81 in order to prevent rotation while the basket is raised, opening the hinged cover while the basket rotates, raising the basket with the cover open, and lowering the basket with the hinged table raised. The extractor shown on the drawings is of the kind described in Specification 134,654. A projection 52 carried by the belt-shifting bar 16 is engaged by the pivoted latch 56 when the basket is raised so as to disengage the carrier 40 from the said latch. The handle 67 controlling the clutch 34 carries a yoke 75 which enters a groove in the boss of the brake-applying handwheel 74, when the brake is applied, but cannot do so when the brake is clear of the pulley 8. Thus the basket can only be raised when the brake is applied. A small hinged cover 47, pivoted on the main cover 41, is fitted with a cam on its spindle which co-acts with a projection 91 on the belt-shifting rod 53 and prevents raising of the cover while the basket is rotated. This cover also engages the handle which moves the hook 44 on which the basket is lifted. A hinged table 81 over which the contents of the drum may be drawn, is carried on a shaft 79 with a cam 82 which engages a lever 86 connected by a rod 88 to the handle 67. A projection on the rod 88 coacts with the projection 91, and by this means the table 81 can only be lifted when the basket is raised and must be lowered before the basket.
Patent GB-1083248-A (GB)
Title: Improvements in or relating to zone melting
IPC: H05B6/30
Filed: 1966-04-28
Abstract: 1,083,248. Zone-melting. SIEMENS A.G. April 28, 1966 [April 28, 1965], No. 18794/66. Heading B1S. In the zone-melting of a silicon rod in a steel vacuum chamber 2 using an annular heating means 9, the heating means is carried by a holder 14 which extends through a vertical slit 12 in a side wall of the chamber to enable relative movement between the rod and heating means. The side wall carrying the slit is hermetically covered by a plate 13 which carries the holder, the contacting surfaces of the wall and plate being ground and polished. Two continuous channels (Fig. 3) in the surface of the side wall surround the slit, the inner one 18 being connected to a source of vacuum and the outer one 15 to a source of vacuum oil. The heating means may provide induction or radiant heating. In the former case, the plate also carries a capacitor 19 forming a resonant circuit with the induction coil. The side wall opposite the plate has a door 3 with an observation window 4 of unbreakable glass. The holders for the rod ends pass through bushes and may be rotated and/or vertically moved from outside the chamber.
Patent GB-201019-A (GB)
Title: Improvements in or relating to carbon holders for use with arc lamps
IPC: H05B31/18
Filed: 1923-04-10
Abstract: 201,019. Phillips, J. E. April 10, 1923. Arc lamps. - An electrodeholder comprises a tube 1 the lower end of which is split as at 2; the split socket is contracted on to the electrode by a split clip 3 the lugs 7, 8 of which are drawn together by means of a bolt 6 and a wing nut 9 having a helical surface 10 engaging a similar surface on the lug 8. The clip 3 is secured to the holder by a screw 4. The tube 1 may be used as an adapter for utilizing short lengths of carbon, the upper end being then inserted in an ordinary holder.
Patent GB-717634-A (GB)
Title: Process for the stabilisation of alkyl phenols
IPC: C07C37/88
Filed: 1952-07-25
Abstract: Alkyl phenols are stabilized against deterioration by treating with an organic polybasic acid, other than oxalic acid, or with an alkali metal or ammonium salt of an organic or inorganic polybasic acid other than sodium bisulphite or sodium carbonate.  Alkyl phenols which may be stabilized according to the invention include particularly the polyalkyl phenols such as the 2 : 4 : 6-trialkyl phenols.  Specified polybasic acids are sebacic, adipic, oxalic, citric and tartaric acid.  Preferably the phenol is treated with at least 0.01 per cent of the stabilizing agent (e.g. 0.05-1.0 per cent), and the treatment is carried out in the presence of a solvent for the stabilizer or for both the stabilizer and the phenol.  The effect of the treatment is said to persist after subsequent washings or recrystallizations using solvents which would be expected to remove the stabilizers.  Many alkyl phenols, cresols and xylenols which may be stabilized are specified. Examples describe the stabilizing of 2 : 6-ditertiary butyl-4:methyl phenol by treating with (1) aqueous citric acid; (2) and (3) citric acid in aqueous isopropyl alcohol; and (4) solutions in aqueous isopropyl alcohol of citric acid, diammonium phosphate, tartaric acid, diammonium citrate and hexasodium tetraphosphate.
Patent GB-643579-A (GB)
Title: Electrostatic generating machines
IPC: H02N1/08
Filed: 1947-07-15
Abstract: 643,579. Electrostatic machines. CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE. July 15,1947, No. 18870. Convention date, July 17, 1946. [Class 35] A cylindrical type electrostatic generator enclosed in a gas-filled container 13 comprises a stator with an even number of part-cylindrical conducting segments 3, 4 and a rotor carrying outwardly facing part-cylindrical conducting members corresponding to those on the stator, the rotating conductors being divided into at least two longitudinally separated groups, each group forming a rotor of the machine, one providing excitation for the other. In the form shown, where two rotors are used, the conducting segments 7<SP>1</SP>, 8<SP>1</SP> provide excitation through brushes 11<SP>1</SP>, 12<SP>1</SP> for the stationary segment 3 which in turn influences the main rotor segments 7, 8, these being connected in turn by brushes 11, 12 to feed the other stationary segment 4 and the output lead 14. The insulating rotor cores 5, 5<SP>1</SP> supporting the rotor segments, also carry contact sectors 9, 10 and 9<SP>1</SP>, 10<SP>1</SP> respectively, these sectors being of substantially less angular extent than the rotor segments. The active edges of the stator and rotor segments are of rounded form and have a marginal thickness equal to at least two-thirds of the gas space between stationary and rotatable members. The capacity between rotor segments is reduced by using an insulator of low dielectric constant and cutting it away round the active edges. In a modification, the machine has two auxiliary rotors connected in succession and the machine may have several pairs of segments on the stator and rotor. Specification 637,434 is referred to.
Patent GB-153094-A (GB)
Title: Improvements relating to talking machines
IPC: G10K13/00
Filed: 1919-07-30
Abstract: 153,094. Barton, A. J., and Aeolian Co. July 30, 1919. Cases with internal horns.-A gramophone case with internal horn c is provided with a polygonal horn extension which can be folded away. A sliding faise bottom b is integral with sides f which, when the false bottom is pulled out, engage the triangular side-pieces e of the pivoted flaps d and raise this up, forming an extension of the horn. In a modification, the sides f are replaced by overlapping doors hinged to the casing a and adapted to be opened bv cams fixed on the false bottom b. The periphery of the mouth of the horn may be bound with felt j.
Patent GB-804925-A (GB)
Title: Improvements in tabulating devices for typewriting machines
IPC: B41J25/18
Filed: 1956-06-19
Abstract: 804,925. Typewriters &c. SOC. DE MECANOGRAPHIE JAPY. June 19, 1956 [June 23, 1955], No. 18981/56. Class 100(4) A typewriter tabulating device with spaced denominational stops co-operating with tabulating stops settable on the carriage has the stops carried along a helix by a rotatable cylinder, to which they are rigidly secured, under the control of tabulation keys. The denominational stops 5a-5d are in a helix around a cylinder 6 having an integral toothed wheel 12 which is capable of rotation and sliding on its own axis 7 and of rotation with an arm 8 about a sector 11 mounted on a shaft 9. The keys 22a-22n are attached to small plates 25a-25n stamped to form heels 26a-26n which engage a bar 28 and, with the exception of cancelling key 22n, to form heels 21a, 21b of increasing length to engage a bar 18. Depression of a key acting through a heel 26 and linkage 30-32 raises a rod 34 which engages a nipple 35 of a strap 36 which through its arm 36a releases a pawl 39 from an escapement wheel 42 and at the same time through a spring coupling 43, strap 36 rocks another strap 44 to engage a pinion 45 with a wheel 46 integral with the wheel 42 to connect a brake cylinder 47 thereto. Also at the same time, rocking of the strap 36 frees a pawl 48 holding the spindle 7 of the cylinder 6 and through a spring 38 acts on a strap 10 to rock the assembly 8, 9, 10 thus raising the cylinder 6 until a stop 56 is engaged and rolling the wheel 12 over the sector 11 to rotate the cylinder on the spindle 7 so that the unitary stop 5a is positioned in the path of a set carriage stop. Depression of a key, except the unitary stop selective key 22a, acts by its other heel 21 on a bar 18 and through linkage 17-14 acting on the sector 11 rotates the cylinder 6 an amount to bring one of the stops 5b-5d to the operative position depending on the length of the heel 21 of the key used. Engagement of a stop 5a-5d thus set, by a carriage stop, causes slight movement of the cylinder 6 to the left on its spindle 7 which movement by an adjustable screw 51 causes a lever 22 to free the rod 34 from the nipple 35 and allows the spring 38 to expand thus returning the strap 36 which re-engages the pawl 39 with the escapement wheel 42 to support the tabulating stops during the shock of arresting the carriage. At the same time, the cylinder 6 is freed to return to its initial position where the pawl 48 re-hooks the spindle 7 and the bars 18, 28 and stops 5a-5d are also returned to their initial positions. To return the set carriage stop the key 22n is depressed and through its heel 21n rocks the sector 11 sufficiently for a cam fixed to the wheel 12 to restore the stop.